./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/clever.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/clever.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:39:40,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:39:40,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:39:40,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:39:40,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:39:40,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:39:40,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:39:40,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:39:40,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:39:40,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:39:40,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:39:40,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:39:40,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:39:40,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:39:40,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:39:40,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:39:40,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:39:40,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:39:40,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:39:40,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:39:40,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:39:40,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:39:40,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:39:40,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:39:40,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:39:40,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:39:40,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:39:40,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:39:40,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:39:40,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:39:40,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:39:40,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:39:40,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:39:40,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:39:40,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:39:40,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:39:40,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:39:40,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:39:40,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:39:40,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:39:40,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:39:40,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:39:40,931 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:39:40,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:39:40,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:39:40,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:39:40,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:39:40,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:39:40,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:39:40,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:39:40,935 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:39:40,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:39:40,936 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:39:40,936 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:39:40,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:39:40,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:39:40,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:39:40,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:39:40,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:39:40,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:39:40,938 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:39:40,938 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:39:40,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:39:40,938 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:39:40,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:39:40,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:39:40,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:39:40,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:39:40,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:39:40,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:39:40,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:39:40,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:39:40,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:39:40,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:39:40,940 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:39:40,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:39:40,941 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:39:40,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:39:40,941 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:39:40,941 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:39:41,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:39:41,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:39:41,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:39:41,263 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:39:41,264 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:39:41,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/clever.wvr.c [2023-09-01 07:39:42,514 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:39:42,733 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:39:42,734 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c [2023-09-01 07:39:42,739 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d5cd1c4/57e136656abb4dff9209d5f4dbae91fa/FLAG602c51d37 [2023-09-01 07:39:42,751 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d5cd1c4/57e136656abb4dff9209d5f4dbae91fa [2023-09-01 07:39:42,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:39:42,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:39:42,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:39:42,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:39:42,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:39:42,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:42,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e7a63cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42, skipping insertion in model container [2023-09-01 07:39:42,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:42,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:39:42,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:39:42,922 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c[2133,2146] [2023-09-01 07:39:42,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:39:42,933 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:39:42,950 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c[2133,2146] [2023-09-01 07:39:42,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:39:42,963 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:39:42,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42 WrapperNode [2023-09-01 07:39:42,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:39:42,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:39:42,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:39:42,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:39:42,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:42,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:42,992 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 85 [2023-09-01 07:39:42,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:39:42,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:39:42,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:39:42,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:39:43,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:43,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:43,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:43,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:43,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:43,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:43,048 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:43,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:43,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:39:43,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:39:43,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:39:43,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:39:43,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (1/1) ... [2023-09-01 07:39:43,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:39:43,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:43,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:39:43,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:39:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:39:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:39:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:39:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:39:43,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:39:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:39:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:39:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:39:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:39:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:39:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:39:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:39:43,113 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:39:43,234 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:39:43,236 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:39:43,460 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:39:43,467 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:39:43,468 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 07:39:43,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:39:43 BoogieIcfgContainer [2023-09-01 07:39:43,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:39:43,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:39:43,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:39:43,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:39:43,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:39:42" (1/3) ... [2023-09-01 07:39:43,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15df69bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:39:43, skipping insertion in model container [2023-09-01 07:39:43,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:39:42" (2/3) ... [2023-09-01 07:39:43,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15df69bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:39:43, skipping insertion in model container [2023-09-01 07:39:43,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:39:43" (3/3) ... [2023-09-01 07:39:43,477 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2023-09-01 07:39:43,484 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:39:43,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:39:43,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 07:39:43,494 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:39:43,590 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 07:39:43,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 129 transitions, 274 flow [2023-09-01 07:39:43,721 INFO L130 PetriNetUnfolder]: 9/127 cut-off events. [2023-09-01 07:39:43,721 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:39:43,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 127 events. 9/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-09-01 07:39:43,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 129 transitions, 274 flow [2023-09-01 07:39:43,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 111 transitions, 231 flow [2023-09-01 07:39:43,739 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:39:43,754 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 111 transitions, 231 flow [2023-09-01 07:39:43,758 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 111 transitions, 231 flow [2023-09-01 07:39:43,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 111 transitions, 231 flow [2023-09-01 07:39:43,796 INFO L130 PetriNetUnfolder]: 8/111 cut-off events. [2023-09-01 07:39:43,796 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 07:39:43,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 111 events. 8/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-09-01 07:39:43,799 INFO L119 LiptonReduction]: Number of co-enabled transitions 1300 [2023-09-01 07:39:46,954 INFO L134 LiptonReduction]: Checked pairs total: 1171 [2023-09-01 07:39:46,954 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-09-01 07:39:46,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:39:46,971 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@216628e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:39:46,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-09-01 07:39:46,974 INFO L130 PetriNetUnfolder]: 2/7 cut-off events. [2023-09-01 07:39:46,975 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:39:46,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:46,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:39:46,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:39:46,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash 14572462, now seen corresponding path program 1 times [2023-09-01 07:39:46,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:46,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948005107] [2023-09-01 07:39:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:46,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:47,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948005107] [2023-09-01 07:39:47,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948005107] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:47,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:39:47,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:39:47,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743190923] [2023-09-01 07:39:47,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:47,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:47,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:47,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:39:47,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 239 [2023-09-01 07:39:47,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:47,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 239 [2023-09-01 07:39:47,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:47,346 INFO L130 PetriNetUnfolder]: 205/342 cut-off events. [2023-09-01 07:39:47,347 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-09-01 07:39:47,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 342 events. 205/342 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1279 event pairs, 57 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 640. Up to 205 conditions per place. [2023-09-01 07:39:47,351 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 32 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-09-01 07:39:47,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 34 transitions, 151 flow [2023-09-01 07:39:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-09-01 07:39:47,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5313807531380753 [2023-09-01 07:39:47,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-09-01 07:39:47,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-09-01 07:39:47,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:47,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-09-01 07:39:47,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,383 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 47 flow. Second operand 3 states and 381 transitions. [2023-09-01 07:39:47,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 34 transitions, 151 flow [2023-09-01 07:39:47,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 34 transitions, 143 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:39:47,387 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2023-09-01 07:39:47,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2023-09-01 07:39:47,391 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2023-09-01 07:39:47,391 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2023-09-01 07:39:47,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:47,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:39:47,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:39:47,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:39:47,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:47,393 INFO L85 PathProgramCache]: Analyzing trace with hash 14572474, now seen corresponding path program 1 times [2023-09-01 07:39:47,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:47,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053295337] [2023-09-01 07:39:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:47,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:47,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053295337] [2023-09-01 07:39:47,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053295337] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:47,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:39:47,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:39:47,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024972377] [2023-09-01 07:39:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:47,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:47,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:39:47,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 239 [2023-09-01 07:39:47,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:47,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 239 [2023-09-01 07:39:47,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:47,605 INFO L130 PetriNetUnfolder]: 317/522 cut-off events. [2023-09-01 07:39:47,605 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 07:39:47,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 522 events. 317/522 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2187 event pairs, 147 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 400. Up to 343 conditions per place. [2023-09-01 07:39:47,610 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 34 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-09-01 07:39:47,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 36 transitions, 172 flow [2023-09-01 07:39:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-09-01 07:39:47,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271966527196653 [2023-09-01 07:39:47,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-09-01 07:39:47,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-09-01 07:39:47,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:47,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-09-01 07:39:47,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,638 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 3 states and 378 transitions. [2023-09-01 07:39:47,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 36 transitions, 172 flow [2023-09-01 07:39:47,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 36 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:39:47,640 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 74 flow [2023-09-01 07:39:47,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-09-01 07:39:47,641 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-09-01 07:39:47,641 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 74 flow [2023-09-01 07:39:47,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:47,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:39:47,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:39:47,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:39:47,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:47,643 INFO L85 PathProgramCache]: Analyzing trace with hash 451777879, now seen corresponding path program 1 times [2023-09-01 07:39:47,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:47,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995231337] [2023-09-01 07:39:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:47,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:47,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:47,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995231337] [2023-09-01 07:39:47,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995231337] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:47,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:39:47,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:39:47,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841589774] [2023-09-01 07:39:47,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:47,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:47,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:39:47,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 239 [2023-09-01 07:39:47,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:47,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 239 [2023-09-01 07:39:47,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:47,838 INFO L130 PetriNetUnfolder]: 453/742 cut-off events. [2023-09-01 07:39:47,839 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2023-09-01 07:39:47,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 742 events. 453/742 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3346 event pairs, 109 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 1404. Up to 483 conditions per place. [2023-09-01 07:39:47,844 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 36 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-09-01 07:39:47,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 207 flow [2023-09-01 07:39:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2023-09-01 07:39:47,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285913528591353 [2023-09-01 07:39:47,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2023-09-01 07:39:47,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2023-09-01 07:39:47,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:47,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2023-09-01 07:39:47,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,854 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 74 flow. Second operand 3 states and 379 transitions. [2023-09-01 07:39:47,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 207 flow [2023-09-01 07:39:47,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:39:47,857 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 84 flow [2023-09-01 07:39:47,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-09-01 07:39:47,859 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-09-01 07:39:47,861 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 84 flow [2023-09-01 07:39:47,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:47,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:47,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 07:39:47,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:39:47,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:39:47,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:47,864 INFO L85 PathProgramCache]: Analyzing trace with hash 451747400, now seen corresponding path program 1 times [2023-09-01 07:39:47,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:47,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151644959] [2023-09-01 07:39:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:47,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:47,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:47,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151644959] [2023-09-01 07:39:47,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151644959] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:47,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760615857] [2023-09-01 07:39:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:47,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:47,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:47,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:39:47,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:39:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:48,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:39:48,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:48,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:39:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:48,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760615857] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:39:48,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:39:48,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-09-01 07:39:48,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392158802] [2023-09-01 07:39:48,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:39:48,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:39:48,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:48,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:39:48,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:39:48,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 239 [2023-09-01 07:39:48,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:48,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:48,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 239 [2023-09-01 07:39:48,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:48,408 INFO L130 PetriNetUnfolder]: 1017/1594 cut-off events. [2023-09-01 07:39:48,409 INFO L131 PetriNetUnfolder]: For 229/229 co-relation queries the response was YES. [2023-09-01 07:39:48,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4333 conditions, 1594 events. 1017/1594 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7807 event pairs, 187 based on Foata normal form. 0/1146 useless extension candidates. Maximal degree in co-relation 2854. Up to 419 conditions per place. [2023-09-01 07:39:48,418 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 88 selfloop transitions, 12 changer transitions 0/100 dead transitions. [2023-09-01 07:39:48,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 100 transitions, 547 flow [2023-09-01 07:39:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:39:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:39:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 890 transitions. [2023-09-01 07:39:48,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319784817692768 [2023-09-01 07:39:48,422 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 890 transitions. [2023-09-01 07:39:48,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 890 transitions. [2023-09-01 07:39:48,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:48,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 890 transitions. [2023-09-01 07:39:48,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:48,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:48,429 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:48,429 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 84 flow. Second operand 7 states and 890 transitions. [2023-09-01 07:39:48,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 100 transitions, 547 flow [2023-09-01 07:39:48,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 100 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:39:48,432 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 162 flow [2023-09-01 07:39:48,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-09-01 07:39:48,433 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2023-09-01 07:39:48,433 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 162 flow [2023-09-01 07:39:48,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.42857142857143) internal successors, (808), 7 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:48,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:48,434 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 07:39:48,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 07:39:48,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:48,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:39:48,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:48,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1119268250, now seen corresponding path program 1 times [2023-09-01 07:39:48,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:48,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92050845] [2023-09-01 07:39:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:48,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:48,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92050845] [2023-09-01 07:39:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92050845] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853525215] [2023-09-01 07:39:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:48,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:48,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:48,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:39:48,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:39:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:48,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:39:48,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:48,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:39:48,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853525215] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:48,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:39:48,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-09-01 07:39:48,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834370837] [2023-09-01 07:39:48,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:48,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:39:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:39:48,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:39:48,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 239 [2023-09-01 07:39:48,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:48,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:48,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 239 [2023-09-01 07:39:48,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:49,015 INFO L130 PetriNetUnfolder]: 893/1442 cut-off events. [2023-09-01 07:39:49,016 INFO L131 PetriNetUnfolder]: For 298/298 co-relation queries the response was YES. [2023-09-01 07:39:49,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4236 conditions, 1442 events. 893/1442 cut-off events. For 298/298 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6905 event pairs, 33 based on Foata normal form. 56/1198 useless extension candidates. Maximal degree in co-relation 3604. Up to 822 conditions per place. [2023-09-01 07:39:49,026 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 63 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-09-01 07:39:49,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 70 transitions, 412 flow [2023-09-01 07:39:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:39:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:39:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-09-01 07:39:49,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280334728033472 [2023-09-01 07:39:49,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-09-01 07:39:49,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-09-01 07:39:49,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:49,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-09-01 07:39:49,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,036 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,036 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 162 flow. Second operand 5 states and 631 transitions. [2023-09-01 07:39:49,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 70 transitions, 412 flow [2023-09-01 07:39:49,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 70 transitions, 400 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 07:39:49,042 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 143 flow [2023-09-01 07:39:49,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-09-01 07:39:49,045 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 13 predicate places. [2023-09-01 07:39:49,045 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 143 flow [2023-09-01 07:39:49,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:49,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:39:49,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:39:49,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:49,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:39:49,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:49,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1120212763, now seen corresponding path program 1 times [2023-09-01 07:39:49,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:49,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906639758] [2023-09-01 07:39:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:49,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:49,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:49,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906639758] [2023-09-01 07:39:49,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906639758] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:49,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225284386] [2023-09-01 07:39:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:49,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:49,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:49,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:39:49,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:39:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:49,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:39:49,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:39:49,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:39:49,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225284386] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:49,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:39:49,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [2] total 3 [2023-09-01 07:39:49,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839312791] [2023-09-01 07:39:49,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:49,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:49,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:49,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:39:49,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 239 [2023-09-01 07:39:49,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:49,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 239 [2023-09-01 07:39:49,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:49,543 INFO L130 PetriNetUnfolder]: 759/1228 cut-off events. [2023-09-01 07:39:49,544 INFO L131 PetriNetUnfolder]: For 865/865 co-relation queries the response was YES. [2023-09-01 07:39:49,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3569 conditions, 1228 events. 759/1228 cut-off events. For 865/865 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5659 event pairs, 547 based on Foata normal form. 0/1028 useless extension candidates. Maximal degree in co-relation 2003. Up to 1228 conditions per place. [2023-09-01 07:39:49,552 INFO L137 encePairwiseOnDemand]: 237/239 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-09-01 07:39:49,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 195 flow [2023-09-01 07:39:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:49,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-09-01 07:39:49,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104602510460251 [2023-09-01 07:39:49,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-09-01 07:39:49,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-09-01 07:39:49,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:49,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-09-01 07:39:49,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,558 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 143 flow. Second operand 3 states and 366 transitions. [2023-09-01 07:39:49,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 195 flow [2023-09-01 07:39:49,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:39:49,561 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 132 flow [2023-09-01 07:39:49,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-09-01 07:39:49,562 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2023-09-01 07:39:49,562 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 132 flow [2023-09-01 07:39:49,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:49,563 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 07:39:49,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:39:49,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:49,769 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:39:49,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:49,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1119269509, now seen corresponding path program 1 times [2023-09-01 07:39:49,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:49,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713866142] [2023-09-01 07:39:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:49,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:49,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:49,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713866142] [2023-09-01 07:39:49,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713866142] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917226808] [2023-09-01 07:39:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:49,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:49,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:49,809 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:39:49,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:39:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:49,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:39:49,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:49,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:39:49,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917226808] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:49,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:39:49,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-09-01 07:39:49,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357424231] [2023-09-01 07:39:49,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:49,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:49,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:39:49,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 239 [2023-09-01 07:39:49,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:49,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 239 [2023-09-01 07:39:49,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:49,971 INFO L130 PetriNetUnfolder]: 674/1083 cut-off events. [2023-09-01 07:39:49,972 INFO L131 PetriNetUnfolder]: For 691/691 co-relation queries the response was YES. [2023-09-01 07:39:49,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 1083 events. 674/1083 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4778 event pairs, 472 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 3081. Up to 1083 conditions per place. [2023-09-01 07:39:49,978 INFO L137 encePairwiseOnDemand]: 237/239 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-09-01 07:39:49,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 182 flow [2023-09-01 07:39:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:49,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:49,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-09-01 07:39:49,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504881450488145 [2023-09-01 07:39:49,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-09-01 07:39:49,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-09-01 07:39:49,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:49,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-09-01 07:39:49,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,984 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 132 flow. Second operand 3 states and 362 transitions. [2023-09-01 07:39:49,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 182 flow [2023-09-01 07:39:49,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:39:49,986 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 129 flow [2023-09-01 07:39:49,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-09-01 07:39:49,987 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 12 predicate places. [2023-09-01 07:39:49,987 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 129 flow [2023-09-01 07:39:49,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:49,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:49,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 07:39:49,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 07:39:50,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:50,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:39:50,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:50,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1119269508, now seen corresponding path program 1 times [2023-09-01 07:39:50,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:50,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031731225] [2023-09-01 07:39:50,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:50,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:50,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:50,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031731225] [2023-09-01 07:39:50,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031731225] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:50,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253067480] [2023-09-01 07:39:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:50,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:50,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:50,233 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:39:50,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:39:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:50,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:39:50,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:39:50,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:39:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:39:50,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253067480] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:39:50,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:39:50,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-09-01 07:39:50,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059873589] [2023-09-01 07:39:50,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:39:50,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 07:39:50,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 07:39:50,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:39:50,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 239 [2023-09-01 07:39:50,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:50,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:50,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 239 [2023-09-01 07:39:50,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:50,540 INFO L130 PetriNetUnfolder]: 1191/1952 cut-off events. [2023-09-01 07:39:50,540 INFO L131 PetriNetUnfolder]: For 919/919 co-relation queries the response was YES. [2023-09-01 07:39:50,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5436 conditions, 1952 events. 1191/1952 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9787 event pairs, 117 based on Foata normal form. 0/1820 useless extension candidates. Maximal degree in co-relation 5419. Up to 684 conditions per place. [2023-09-01 07:39:50,552 INFO L137 encePairwiseOnDemand]: 235/239 looper letters, 70 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2023-09-01 07:39:50,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 514 flow [2023-09-01 07:39:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:39:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:39:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 719 transitions. [2023-09-01 07:39:50,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50139470013947 [2023-09-01 07:39:50,555 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 719 transitions. [2023-09-01 07:39:50,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 719 transitions. [2023-09-01 07:39:50,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:50,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 719 transitions. [2023-09-01 07:39:50,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.83333333333333) internal successors, (719), 6 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:50,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:50,561 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:50,561 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 129 flow. Second operand 6 states and 719 transitions. [2023-09-01 07:39:50,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 514 flow [2023-09-01 07:39:50,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 79 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:39:50,566 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 192 flow [2023-09-01 07:39:50,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-09-01 07:39:50,566 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 16 predicate places. [2023-09-01 07:39:50,567 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 192 flow [2023-09-01 07:39:50,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:50,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:50,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:39:50,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:39:50,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:50,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:39:50,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:50,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1120212761, now seen corresponding path program 1 times [2023-09-01 07:39:50,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:50,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610521508] [2023-09-01 07:39:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:50,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:50,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:50,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610521508] [2023-09-01 07:39:50,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610521508] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:50,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783178539] [2023-09-01 07:39:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:50,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:50,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:50,816 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:39:50,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:39:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:50,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:39:50,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:50,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:39:50,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783178539] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:50,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:39:50,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-09-01 07:39:50,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757017560] [2023-09-01 07:39:50,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:50,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:50,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:39:50,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 239 [2023-09-01 07:39:50,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:50,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:50,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 239 [2023-09-01 07:39:50,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:51,009 INFO L130 PetriNetUnfolder]: 979/1608 cut-off events. [2023-09-01 07:39:51,010 INFO L131 PetriNetUnfolder]: For 1460/1460 co-relation queries the response was YES. [2023-09-01 07:39:51,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 1608 events. 979/1608 cut-off events. For 1460/1460 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7939 event pairs, 687 based on Foata normal form. 0/1608 useless extension candidates. Maximal degree in co-relation 4779. Up to 1608 conditions per place. [2023-09-01 07:39:51,019 INFO L137 encePairwiseOnDemand]: 237/239 looper letters, 27 selfloop transitions, 1 changer transitions 3/31 dead transitions. [2023-09-01 07:39:51,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 250 flow [2023-09-01 07:39:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-09-01 07:39:51,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502092050209205 [2023-09-01 07:39:51,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-09-01 07:39:51,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-09-01 07:39:51,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:51,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-09-01 07:39:51,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:51,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:51,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:51,035 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 192 flow. Second operand 3 states and 360 transitions. [2023-09-01 07:39:51,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 250 flow [2023-09-01 07:39:51,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 241 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-09-01 07:39:51,040 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 174 flow [2023-09-01 07:39:51,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-09-01 07:39:51,041 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 14 predicate places. [2023-09-01 07:39:51,041 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 174 flow [2023-09-01 07:39:51,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:51,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:39:51,042 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 07:39:51,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 07:39:51,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:51,249 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-09-01 07:39:51,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:39:51,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1874986873, now seen corresponding path program 2 times [2023-09-01 07:39:51,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:39:51,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292333894] [2023-09-01 07:39:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:39:51,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:39:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:39:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:39:51,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:39:51,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292333894] [2023-09-01 07:39:51,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292333894] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:39:51,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101513567] [2023-09-01 07:39:51,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:39:51,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:51,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:39:51,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:39:51,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:39:51,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:39:51,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:39:51,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:39:51,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:39:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:39:51,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:39:51,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101513567] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:39:51,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:39:51,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-09-01 07:39:51,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205279871] [2023-09-01 07:39:51,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:39:51,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:39:51,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:39:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:39:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:39:51,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 239 [2023-09-01 07:39:51,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:51,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:39:51,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 239 [2023-09-01 07:39:51,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:39:51,484 INFO L130 PetriNetUnfolder]: 585/896 cut-off events. [2023-09-01 07:39:51,484 INFO L131 PetriNetUnfolder]: For 1084/1084 co-relation queries the response was YES. [2023-09-01 07:39:51,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2925 conditions, 896 events. 585/896 cut-off events. For 1084/1084 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3447 event pairs, 363 based on Foata normal form. 30/926 useless extension candidates. Maximal degree in co-relation 2907. Up to 896 conditions per place. [2023-09-01 07:39:51,488 INFO L137 encePairwiseOnDemand]: 237/239 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-09-01 07:39:51,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 218 flow [2023-09-01 07:39:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:39:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:39:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-09-01 07:39:51,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.500697350069735 [2023-09-01 07:39:51,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-09-01 07:39:51,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-09-01 07:39:51,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:39:51,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-09-01 07:39:51,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:51,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:51,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:51,493 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 174 flow. Second operand 3 states and 359 transitions. [2023-09-01 07:39:51,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 218 flow [2023-09-01 07:39:51,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 193 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-09-01 07:39:51,500 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-09-01 07:39:51,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-09-01 07:39:51,500 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-09-01 07:39:51,501 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-09-01 07:39:51,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:39:51,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2023-09-01 07:39:51,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-09-01 07:39:51,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-09-01 07:39:51,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-09-01 07:39:51,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2023-09-01 07:39:51,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-09-01 07:39:51,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2023-09-01 07:39:51,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2023-09-01 07:39:51,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-09-01 07:39:51,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-09-01 07:39:51,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-09-01 07:39:51,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-09-01 07:39:51,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-09-01 07:39:51,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-09-01 07:39:51,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:39:51,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:39:51,713 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:39:51,718 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 07:39:51,718 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 07:39:51,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 07:39:51 BasicIcfg [2023-09-01 07:39:51,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 07:39:51,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 07:39:51,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 07:39:51,723 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 07:39:51,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:39:43" (3/4) ... [2023-09-01 07:39:51,725 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 07:39:51,729 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 07:39:51,730 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 07:39:51,735 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-09-01 07:39:51,736 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 07:39:51,736 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 07:39:51,736 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 07:39:51,769 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 07:39:51,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 07:39:51,770 INFO L158 Benchmark]: Toolchain (without parser) took 9015.49ms. Allocated memory was 67.1MB in the beginning and 144.7MB in the end (delta: 77.6MB). Free memory was 45.4MB in the beginning and 51.1MB in the end (delta: -5.7MB). Peak memory consumption was 73.5MB. Max. memory is 16.1GB. [2023-09-01 07:39:51,770 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 32.4MB in the beginning and 32.4MB in the end (delta: 48.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 07:39:51,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.30ms. Allocated memory is still 67.1MB. Free memory was 45.2MB in the beginning and 34.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 07:39:51,771 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.06ms. Allocated memory is still 67.1MB. Free memory was 34.4MB in the beginning and 32.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:39:51,771 INFO L158 Benchmark]: Boogie Preprocessor took 57.59ms. Allocated memory is still 67.1MB. Free memory was 32.6MB in the beginning and 47.5MB in the end (delta: -14.9MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2023-09-01 07:39:51,771 INFO L158 Benchmark]: RCFGBuilder took 412.07ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 33.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 07:39:51,771 INFO L158 Benchmark]: TraceAbstraction took 8250.04ms. Allocated memory was 67.1MB in the beginning and 144.7MB in the end (delta: 77.6MB). Free memory was 32.6MB in the beginning and 54.2MB in the end (delta: -21.7MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2023-09-01 07:39:51,772 INFO L158 Benchmark]: Witness Printer took 46.96ms. Allocated memory is still 144.7MB. Free memory was 54.2MB in the beginning and 51.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 07:39:51,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 32.4MB in the beginning and 32.4MB in the end (delta: 48.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.30ms. Allocated memory is still 67.1MB. Free memory was 45.2MB in the beginning and 34.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.06ms. Allocated memory is still 67.1MB. Free memory was 34.4MB in the beginning and 32.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.59ms. Allocated memory is still 67.1MB. Free memory was 32.6MB in the beginning and 47.5MB in the end (delta: -14.9MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * RCFGBuilder took 412.07ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 33.4MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8250.04ms. Allocated memory was 67.1MB in the beginning and 144.7MB in the end (delta: 77.6MB). Free memory was 32.6MB in the beginning and 54.2MB in the end (delta: -21.7MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. * Witness Printer took 46.96ms. Allocated memory is still 144.7MB. Free memory was 54.2MB in the beginning and 51.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 110 PlacesBefore, 23 PlacesAfterwards, 111 TransitionsBefore, 19 TransitionsAfterwards, 1300 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 110 TotalNumberOfCompositions, 1171 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1171, independent: 1171, independent conditional: 0, independent unconditional: 1171, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 665, independent: 665, independent conditional: 0, independent unconditional: 665, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1171, independent: 506, independent conditional: 0, independent unconditional: 506, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 665, unknown conditional: 0, unknown unconditional: 665] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 158 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.1s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 503 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 393 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 650 IncrementalHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 14 mSDtfsCounter, 650 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=8, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 99 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 237 SizeOfPredicates, 2 NumberOfNonLiveVariables, 594 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 20/43 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 07:39:51,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE